jouclard



I. -IOUCLARD. STOVE ADAPTED TO .BURN SAWDUST, SHAVINGS, AND LIKEWORKSHOP REFUSE.

APPLICATION FILED AUG-23| 1921. I

PatentedSept. 12

1922. -6 SHEETS-SHEET I.

.Figli 1. UCLARD.

STOVE DAPTED T0 BURN SAWDSTQSHAVINGQ, AND LIK WORKSHOP REFUSE.

APPLICATION FILED AuG.23, 1921.

1,428,782., -Pandsepn I2, 1922-.

6 SHEETS-SHEET 2.

{M3/k Z le! n. e!

' J. JOUCLARD.

sTovE ADAPTED To BURN sAwnusT, sHAvlNes, AND LIKE woRKsHoP REFUSE.

APPLICATION FILED AUG23y |92l I 1,428,782, PatentdSept. 12, 1922.

6 SHEETS-SHEET 3.

1. JOUCLARD.

STOVE ADAPTED T0 BURN SAWDUST, SHAVINGS, AND LIKE WORKSHOP REFUSE.APPLlcAloN FILED AuG.23. 1921.

l ,428,782, PatentedSept. 12, 922..

6 SHEETS-SHEET 4.

Fig..

J. JOUCLARD. STOVE ADAFTED T0 BURN SAWDUST, SHAAVINGSQAND LIKE WORKSHOPREFUSE.

APPLlCAT-ION FILED AUG23. 1921.

J. JOUCLARD.

STOVE ADAPTED T0 BURN SAWDYUSI, ASLHAVERGS, AND LIKE WORKSHOP REFUSE.

APRLlcATloN HLED'AD'GJS, 1921.

G SHEETS-SHEET 6.

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$3 r 'X 6'?, Patented sepa lla, .lli-Kam raras.

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STOVE ADAPTE'D T0 BURN SAWDUST, SHAVINCTS, AND LIKE WORKSHOP ,REFUSEApplication filed August 23, 15221. Serial No. 494,538. y

To alt @07m/nt t may concern Be it known that l, J'Unns JOUCLARD, vacitizen oit` the Republic ot France, lresiding` in Versailles.Seine-et-isen France, have invented certain new and useiul improvementsin Stoves Adapted to Burn Sai/vdust, Shavinpgs, and like ViTorkshopiRefuse (for which have tiled applications in France October 19, 1918,andv February G, 1919), and l do .iereby declare the following; to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference beine; had toA ther accompanying drawings and to lettersor figures ot reference marked thereon, whichv form a part of thisspecilication.

My invention relates to a stove which is specially constructed for thecontinuous burning of sawdust, lshavings or like workshop refuse, by aslow or rapid combustion.

rlChe said stove is constituted .in principle by a cylindrical bodywhose bottom part is provided with a grating and whose lateral wallsconstitute ior the whole or a part of the surta-ce thereof, othergratings forming' small chimneys communicating with a main collectingchamber for the discharge of the ,ejas'es of combustion. The centralportion is also provided with a grate surface in the majority of cases.`is regards the lower grating, it serves to'admit the air required forthe combustion. The device is completed by a receptacle disposed uponthe main body oi the stove and by a special feeding device fitting' uponthe said receptacle whereby the feeding or" the latter may be effectorduring; the operation ot thesaid stove, obviatinkg,` at the same timeAall -production of dust.

In the said device, the lateral surface of the receptacle containing;-the sawdust is provided with projecting' portions which are limited, bythe vertical grate bars. The device also containsat the center ot thersaid receptacle another portion of vertical "disposition formed bygrate bars. rlhis portion has cylindrical shape and is connected withthe chimney by a passage traversing the receptacle which is iilled withsawdust. f The presence of these parts within the sawdust will give riseto a certain difficulty in the downward 'feed' during;` the progressofthe combustion.

na modified form of construction, the

hereinbeiiore described parts'are replaced by a transverse member in theform of a passage or support having an 'apertured surface andextending,v between two of the ver tical passages projecting' at thesides.- Various accessory devices have also been provided for thedischarge of the ashes.

The following description, together with the accompanying drawings whichare given by way Iof example, sets forth various embodiments of myinvention.

Fig.y l is'a vertical section of' a sawdust burning stove according tothis invention, and oi the current type. Fig, 2 is a horizontal sectionot the same on thev line X--Y Fig. 1. Fig. 3 is a vertical sectionof amodilied form ot construction which is particularly applicable tov thecombustion of shavings. Fig. 4l is a horizontalv section ot the same onthe line ZZ Fig. 3. Fig. 5 relates to the direct use lol: the devicewith an evaporating apparatus, the whole device being' shown in verticalsection. Figs. 6 and 7 relate to the feeding devices. Fig. S

is an elevation of a larger sized evaporating device than thepreceding', and i? 9 is a plan view of the same. Figs, 10 and 11 arerespectively elevational and plan viewsof the device as applied to akitchen range. Fig. 12 is a vertical section ot a modified form of asawdust burning` stove, on a plane perpendioular'to the vdirection ofthe additional passage. Fig. 13 is a horizontal section corresponding toFig. 12.

Fig. 1liisa partial'vertical section in .a

plane perpendicular to that oi. Fig. 12."

*Referring to Figs, 1 'and 2, it isy observed that the said stovecomprises a cylindrical body @adapted to contain the "fuel, havingmounted thereupon a feedA hopper and terminating at the bottom in agrate' c*- which separates the same from an ash `pit l through which theadmission of air or' combiilstion takes place. The verticaldraft-devices are so disposedy as `to constitute semi- `cylindricalgrated fines e whereof. four are disposed aroundf'the"periphery, thesebeing` boundedby the vertical lgrate bars f whose base g isdisposedadjacent the grate c. The

`interiors of the said passages are connected through the connectingmembers 7i with the main discharge collecting` chamber z' having,-secured thereto the end' of the main outlet pipe or chimney 7c. At thecentral partv is also disposed a cylindrical member Z Whose vdisposed atthe central surface is vformed of grate bars, but the chamber thusproduced may have a smaller capacity than the flues e so as to 'cause nohindrance tothe descent of the combustible.. .The upper. part or memberZ yis also connected withthe main collectingchamber f by affine'm'either directly or through the medium of one of the said gratedflues. .The

' members'Z-m may be omitted in case shavingsonchips alone are burned,Vas seen in Figs. 8-.and l.

A modified lform of construction is shown,

in Figs and et.` lThe cylindrical `wall 'is concentric with the 'mainbody@ ofthe stove, and forms a continuous surface defining thecombustion chamber. .The discharge Lof gas takes place .throughout theentirev periphery of the ,annular space e1 A and in the maincollectingchamber e' which is disposed vas in'the preceding case.- Acombined grating. and chimneymay also be sawdust.

The operation of the apparatus Ain either oase will be readilyunderstood.` Thel air which is introduced in adjustable quantitythroughthe apertures .a of the ash pitthesebeing preferably four innumber to correspond to the four grated fines e--passes through thegrate and easily penetrates into the mass. In thecase of sawdust a verystrong draught may be obtained,'by the use ofthe cylindrical member Zand the kgrate iba-rs' f which are directly in relation to the chimneyland are sufficiently near each other y in order that the mass of thesawdust shall fuel.

not prevent the` draught. .lVhere chips or shaving are burned, thedraught is on the contrary reduced by closing,- the orifices Z in analmost complete manner, whereby rthis fuel will not burnftoo rapidly.v lTheesaid stove will thus afford a considerable variao tion in itsactionand this alone will enablev it to burn sawdust as well as chipsand shav-` ing-s or the like.. But-,whenshavings are em- .ployed, .it ispreferable to omit the cylindrical member Z. Moreover, a veryregularoperation is afforded by reasony of thehopper b A.the entire massof water contained in the ap'- paratus, and the latter is thusapplicablelto centralheating and` in general to allindus- 'tries makinguse of hot water or steam, including the supplyl of steanrA engines.

In easethe wateris vto be heated totheboling point, the jacket o isAprovided with all the part for burningnecessary devices such aspressuregauge,

safety valve, water levelfgauge, and the like,

these being shown vin broken lines in Fig. 5.

This method of heating isparticularly economical and rapid; vBy way ofexample, my experiments made with.. a stove ofabout 0.50 meters diameterand surroundedv by a `water jacket having ran approximate capacity"of 50liters,vshowedthat they boiling of the water took 'lace afterAQO'ininutes normal .heating` witi sawdust as ffuel. n n

In' case it ,shoulda be desiredto-obtain the productionof steam ata veryhigh rate and especially a-high .steam pressure, itis advisable todispose aV plurality of heating; units surroundedk a eonimon'waterjacket, as shown in Figs. 8 and 9. y All these devices may be suppliedwith fuel with ythe greatest' facility, by means of a ,feeding devicevas Y.

shown in Figs. `6 and 7, thus .obviatiyng' all dustand smoke. The saidfeeding devicey is constituted by a simple cylindrical chamber p havingthe same diameter as the main body of the` said stove and whose Abottomportion is provided with orifices for the passage of the bars g'forminga grating and secured toa frame 1^. For thefeeding` opera tion, the bars'Q areintroduced in thecorrespondinggoriiices ofthe 'cylinder p andthesawdust or shavings are packed above the grating. The cover Z1 of thehopper` is then removed-and disposed upon' the top of the cylinder p.This-latter `is thenplaced upon the-said Lhopper and the frame 1 isydrawn` upon in order to cause thev fuel tol descend.

Figs. 10 and 1l showA the application of the sawdust burning stove to akitchen range. In this casethe receptacle b is omitted and the feeding'device is no longer required. A i

special plate t is adapted tov be disposed on the top vof the stove,pandyit is provided with f the feed apertures u which are disposed as in theknown devices.' The-chamber o is ldis:-y posed in the rear of the stove,being trav,- ersed byf the pipe or chimney, andl thus constitutes anoven having a door which. is shown lat m, f

In Figs. 12`and 14a-the main body of the stove, a, is provided with the`vertical nues e which are Vfour in number-in the example hereinrepresented. The; transverse passage is disposedat c1 upon the bottomgrate c and preferably in the direction of the grate bars. The saidpassage is provided with inclined sides inorder to permit the 'sawdustto slide .more readily upon .the same.' Each of these .sidesiseonstituted'by a set of grate bars (Z1 of trapezoidal section, thespaces between bars being greatest at theouter part, 'as is usuallycarried out for the grate' o.- v Atthe top, a longitudinal bar.L f1 ofythe same section servesto connect together the said bars of the twosurfacesl and at'the bottom part, v,the

order to seeurethe said transverse member 4lugs gllare' disposedadjacent' the ends inv in position. The latter member is securedpreferably by means of small tenons whose shape corresponds to theinterstices between the grate bars and which are fitted at each side inone of the said interstices. In this manner the said member c1 ismounted and removed with great facility and rapidity. To facilitatethese operations, a slight play is provided between the ends h1 of thesaid horizontal member or passage and the corresponding flues e.

The operation of the device will be readily understood. The air admittedthrough the lower part is caused to enter the said horizontal passagethrough the grate c and thus gives rise to currents which fiowapproximately according to the arrows f2, Fig. 14, and which proceedinto the flues c leading to the chimney. This affords a large aircontact surface for the sawdust, but without any corresponding hindranceto the descent of the same. The same conditions prevail when shavings orlike fuel are used in the said stove. Should it be desired to provide agreater air circulation, the central bar of the grate c may be removed,as shown in Fig. l2, whereby a considerable space l will be left. Thisdisposition is also favorable for the disengagement of the ashes. Toprevent in a more reliablel manner the formation of deposits of ash, thebars of the iiues e have been extended as far as the grate c, instead ofresting thereupon by means of supports. It will be observed that thehereinbefore described sawdust burning stove is of a most practicalnature and is applicable in the majority of cases. The above mentioneddispositions are not of a limitative nature, and the device may besuitably modified in proportions or in the details thereof withoutdeparting from the spirit of my invention.

I claim l. A stove comprising a cylindrical body,

an ash-pit below the latter, a grate above the ash-pit, vertical gratedlues for facilitating the combustion, an annular collecting chamber forthe burnt gases, adjustable means whereby air required for thecombustion is introduced through the ash-pit and means for feeding thestove with fuel.

2. A stove comprising a cylindrical main body, an ash-pit below thelatter, a grate above the ash-pit, vertical grated flues in the body, anauxiliary grated flue disposed adjacent the center of the body, all thesaid grated liuesl facilitating the combustion, an annular collectingchamber for the burnt gases, adjustable means whereby the air requiredfor combustion is admitted to the ash-pit, and means for supplying thestove with fuel.

8. A stove comprising a cylindrical main body, an ash-pit below thelatter, a grate above the ash-pit, semicylindrical vertical grated fluesdisposed along the walls of the body and extending to the grate, anauxiliary grated flue disposed adjacent the center of said body forfacilitating combustion, an annular collecting chamber for the burntgases disposed at the top of the body, adjustable means whereby airrequired for combustion is admitted to the ash-pit, and means forsupplying said stove with fuel.

4;. A stove comprising a main body, a grate and an ash-pit, a verticalgrate spaced from said body and forming a vertical flue between saidbody and grate, a collecting chamber of larger diameter than said bodyat the top of said flue, and said chamber having a chimney connection.

In testimony that I claim the foregoing as my invention, I have signedmy name.

JULES JOUCLARD.

